From: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Date: Fri, 31 Oct 2014 19:05:04 +0000 (-0700)
Subject: rcu: Make rcu_read_unlock_special() propagate ->qsmaskinit bit clearing
X-Git-Tag: omap-for-v4.1/prcm-dts-mfd-syscon-fix~166^2^2^3~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b6a932d1d9840727eee619d455bdeeedaa205be9;p=pandora-kernel.git

rcu: Make rcu_read_unlock_special() propagate ->qsmaskinit bit clearing

This commit causes rcu_read_unlock_special() to propagate ->qsmaskinit
bit clearing up the rcu_node tree once a given rcu_node structure's
blkd_tasks list becomes empty.  This is the final commit in preparation
for the rework of RCU priority boosting:  It enables preempted tasks to
remain queued on their rcu_node structure even after all of that rcu_node
structure's CPUs have gone offline.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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